I don't think it's feasible to have a satellite orbit at 100 km and not fall out of the sky in a few days due to atmospheric drag. Even ISS at 300-400 km orbit

I don't think it's feasible to have a satellite orbit at 100 km and not fall out of the sky in a few days due to atmospheric drag. Even ISS at 300-400 km orbit has to be regularly reboosted because it's continuously losing altitude.